-----Original Message-----OK, I'll buy that. I'm disappointed to hear that, though, because my .map file is 3400 lines long and I've got 4 versions of it to alter each time I make a change because I provide users a java-applet based version of the page and a non-applet version, as well as large and small map variations...OUCH! This is going to be very tedious to implement, but I guess that's what I get paid for! :-)
From: Mike Smith [mailto:nospam@cnrit.tamu.edu]
Sent: Tuesday, October 01, 2002 3:40 PM
To: Martin, Daniel
Cc: mapserver-users@lists.gis.umn.edu
Subject: Re: [mapserver-users] HTML Legend with Status Checking...
About the scaleable symbols...I'm not using them because I don't know what they are? I've got a symbols.sym file defined (that I took from the maplab tar archive) and it's got a bunch of symbols defined in it and I scale them with the "SIZE" keyword in my map file...is there something else I could do? What exactly is a "scaleable symbol"?
Thanks very much for your help!
Martin, Daniel wrote:
4ACBA1414DD9EE418CC250E4AAA9035A192B35@STL-EXBE-I03.corp.erac.com" type="cite">It's all clear now. Sorry for the misunderstanding.AFAIK, classes don't have a status you can access in the HTML legend like layers (unfortunately). What I know will work (because I do it all the time) is creating 4 separate layers each with 1 and only 1 class and moving your MINSCALE and MAXSCALE settings to the layer object. Give all the layers the same name (very important).This will perform exactly the same since you have no crossover of scale, and the HTML legend will perform as you expect it to.On a separate subject, you might be better off using scaleable symbols rather than your current solution. But, perhaps you have reasons for not using them.-Dan-----Original Message-----
From: Mike Smith [mailto:nospam@cnrit.tamu.edu]
Sent: Tuesday, October 01, 2002 2:43 PM
To: Martin, Daniel
Cc: mapserver-users@lists.gis.umn.edu
Subject: Re: [mapserver-users] HTML Legend with Status Checking...LAYER
NAME Parima_Surveyhouseholds
GROUP Region
TYPE Point
STATUS off
DATA parima_surveyhouseholds
HEADER 'parima_surveyhouseholds.shp_header.html'
TEMPLATE parima_surveyhouseholds.shp_query.html
CLASS
MINSCALE 20136780
Name 'Parima Survey Households'
SYMBOL 'triangle'
SIZE 5
COLOR 255 0 0
OUTLINECOLOR 0 0 0
END # CLASS
CLASS
MINSCALE 10068390
MAXSCALE 20136779
Name 'Parima Survey Households'
SYMBOL 'triangle'
SIZE 8
COLOR 255 0 0
OUTLINECOLOR 0 0 0
END # CLASS
CLASS
MINSCALE 5034193
MAXSCALE 10068389
Name 'Parima Survey Households'
SYMBOL 'triangle'
SIZE 11
COLOR 255 0 0
OUTLINECOLOR 0 0 0
END # CLASS
CLASS
MINSCALE 0
MAXSCALE 5034192
Name 'Parima Survey Households'
SYMBOL 'triangle'
SIZE 15
COLOR 255 0 0
OUTLINECOLOR 0 0 0
END # CLASS
END # LAYER
Martin, Daniel wrote:
4ACBA1414DD9EE418CC250E4AAA9035A192B34@STL-EXBE-I03.corp.erac.com" type="cite">Could you provide the map file definition for the Parima Survey Households layer?Thanks,Dan-----Original Message-----Same thing. Now I don't have group header bars seperating my layers, but all the layers still show up and when I click on a layer that has scale-specific classes, the symbols for all scales still show up. By the way, I'm on Mapserver 3.6.1 and here's the page to go to if you want to see what I'm talking about:
From: Mike Smith [ mailto:nospam@cnrit.tamu.edu ]
Sent: Tuesday, October 01, 2002 11:56 AM
To: Martin, Daniel
Cc: mapserver-users@lists.gis.umn.edu
Subject: Re: [mapserver-users] HTML Legend with Status Checking...
http://cnrit.tamu.edu/maps/map_init.html
Click on the very last button on that page (the one that says "FRAMES VERSION" on it). When the map shows up, expand the "Regional" folder on the left-hand side to display those layers. The one that I'm working on right now is called "Parima Survey Households". Click on that layer to load it into the map, then you'll see the various symbols I'm referring to show up in the legend. I represent the Parima households with red triangle symbols and I have different sized triangles depending on how far zoomed in you are so that they are small at a high scale and larger as you zoom in...but I don't want all versions of that symbol to show up in my legend all the time...just the one that's in scale.
Thanks again!
Martin, Daniel wrote:
4ACBA1414DD9EE418CC250E4AAA9035A16F347@STL-EXBE-I03.corp.erac.com" type="cite">Try this. Take out the leg_group_html section, and the leg_layer_html section, leaving only the leg_class_html section. Take them out entirely - don't leave an empty set of tags. Then, let me know what happens.-Dan-----Original Message-----Gladly. Here is my legend code:
From: Mike Smith [ mailto:nospam@cnrit.tamu.edu ]
Sent: Tuesday, October 01, 2002 11:33 AM
To: Martin, Daniel
Cc: mapserver-users@lists.gis.umn.edu
Subject: Re: [mapserver-users] HTML Legend with Status Checking...
[leg_group_html]
<tr>
<td colspan=3 bgcolor=#cccccc><b>[leg_group_name]</b></td>
</tr>
[/leg_group_html]
[leg_layer_html]
[/leg_layer_html]
[leg_class_html]
<tr>
<td width=15> </td>
<td>
<img src="javascript:void(0);" width=15 height=15>
</td>
<td>
[leg_class_name]
</td>
</tr>
[/leg_class_html]
However, it does not work as you say (and as the documentation on the web page says!). Layers that are "off" do not show up (that's as expected and what I want), that's fine, but layers that are out of SCALE DO show up, and that's not as expected and that's not as the documentation states and that's NOT what I want. For example, I have a layer called Ethiopia_Rivers...here's what it looks like:
LAYER
NAME "Ethiopia_Rivers"
TYPE LINE
STATUS off
GROUP Ethiopia
DATA "ethiopia_rivers"
HEADER 'ethiopia_rivers.shp_header.html'
CLASS
MAXSCALE 8710165
Name 'Ethiopia Rivers'
COLOR 102 204 255
TEMPLATE ethiopia_rivers.shp_query.html
END # CLASS
END # LAYER
Now, when I'm viewing my map at full extent, my scale factor is 1: 20136789, therefore if I click on the Ethiopia_Rivers layer at that zoom level, nothing shows up in the map. This is the exact behavior that I would expect...I'm out of scale for that layer, so it doesn't show up in the map until I zoom in. The PROBLEM, however, is that the "Ethiopia Rivers" icon and label pop up in my legend...this is counter-intuitive, contrary to the documented behavior of Mapserver, and just flat-out frustrating! If the layer is not showing up in my map (because it's out of scale), then it should NOT be in my legend either. Grrrr!!! Pardon me for sounding bitter...I'm not lashing out at you, I'm very grateful for your help, I'm just frustrated at Mapserver.
Thanks!
Martin, Daniel wrote:
4ACBA1414DD9EE418CC250E4AAA9035A192B33@STL-EXBE-I03.corp.erac.com" type="cite">Perhaps I misunderstood. By default (no opt_flag set) layers that are out
of scale and layers that have a STATUS off will not show in an HTML legend.
A legend exactly like this should do exactly what it sounds like you want:
[leg_class_html]
<TR>
<TD>
<img src="javascript:void(0);" border=0>
</TD>
<TD>
<font face="arial" size=2>[leg_class_name]</font>
</TD>
</TR>
[/leg_class_html]
I'm not sure why you are having trouble getting the default action. Perhaps
you could provide your current legend.
-Dan
-----Original Message-----
From: Mike Smith [mailto:nospam@cnrit.tamu.edu]
Sent: Tuesday, October 01, 2002 10:59 AM
To: Martin, Daniel
Cc: mapserver-!
user!
s@li!
sts.gis.u
mn.edu
Subject: Re: [mapserver-users] HTML Legend with Status Checking...
Thank you, but this didn't change a thing. Actually, let me correct
that...it had a negative effect because now all my layers show up too,
even if they are not displayed in the map. I want only active layers to
show in the legend and I want only IN-SCALE class symbols to show up in
the legend, I don't want 4 symbols to show up in the legend for every
layer that I have which has scale-specific classes...I just don't guess
I can do that without converting everything over to Mapscript. X-(
Any other ideas?
Martin, Daniel wrote:You probably want a bit mask of 2 in your opt_flag. Layers with STATUS off
still show, but layers out of scale don't show.
[leg_layer_html opt_flag=2]
Per http://mapserver.gis.umn.edu/doc36/html-legend-howto.html :
1: If set, show layer even if out of scale (default: hide layers out of
scale).
2: If set, show layer even if status is OFF (default: hide layers with
STATUS OFF).
4: If set, show layer even if type is QUERY (default: hide layers of TYPE
QUERY)
8: If set, show layer even if type is ANNOTATION (default: hide layers of
TYPE ANNOTATION)
In my experience, opt_flag=2 is the most intuitive.
-Dan
-----Original Message-----
From: Mike Smith [mailto:nospam@cn!
rit.!
tam u!
.ed
u]
Sent: Mo
nday, September 30, 2002 5:06 PM
To: mapserver-users@lists.gis.umn.edu
Subject: [mapserver-users] HTML Legend with Status Checking...
Hello,
I've seen how you can make legends using PHP Mapscript that check to
see whether a layer or class is in scale before displaying it in the
legend, but no mention of how to do this if I'm not using Mapscript. I
have sub-classed many of my layers so that symbols show up in different
sizes depending on how far zoomed in you are. In other words, I'm using
"MINSCALE" and "MAXSCALE" in my classes, but all of my classes show up
in the legend and that's really annoying! I want ONLY the in-scale
symbol to show up in the legend as it does in the map...any tips on how
to do this without Mapscript? I see the "if" conditional statements in
the HTML Legend How-to, b ut!
there
's no status o
f "SCALE" to
check with
those statements... if I could put an if statement in my legend template
that checked whether or not a class or layer was in scale, then I'd be
in business...any way to do this?
Thanks!